IOS 纯代码添加 Button Image Label 添加到自定义View中

@interface ViewController ()
/**获取.plist数据*/
@property (nonatomic,strong) NSArray *apps;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
  
    
    //九宫格的总列数
    int totalColumns=5;
    
    //1.1个格子的尺寸
    CGFloat appW=50;
    CGFloat appH=60;
    
    //2.计算间隙 ＝（控制器view的宽度 -5*应用宽度）/应用宽度+1
    CGFloat margin=(self.view.frame.size.width-totalColumns*appW)/(totalColumns+1);
    
    //3.要的应用个数创建对应的格子
    
    for (int index=0; index<self.apps.count; index++)
    {
        //3.1 创建1个格子
        UIView *appView=[[UIView alloc]init];
        
        //设置背景色
        appView.backgroundColor=[UIColor whiteColor];
        
        //3.2计算行号和列号
        int row =index /totalColumns;
        int col =index % totalColumns;
        
        CGFloat appX =margin+ col*(appW + margin);
        CGFloat appY =margin+ row*(appH + margin);
        
        appView.frame=CGRectMake(appX, appY, appW, appH);
        
        //3.3添加格子到控制器的View
        [self.view addSubview:appView];
        
        
        
        //3.4添加 内部的小控件
        //取出index位置对应的应用信息
        NSDictionary *appInfo=self.apps[index];
        
        
        //3.4.1添加图片
        UIImageView *iconView=[[UIImageView alloc]init];
        CGFloat iconW=35;
        CGFloat iconH=35;
        CGFloat iconX=(appW-iconW)*0.5;
        CGFloat iconY=0;
        iconView.frame=CGRectMake(iconX, iconY, iconW, iconH);
        //iconView.backgroundColor=[UIColor grayColor];
        iconView.image=[UIImage imageNamed:appInfo[@"icon"]];
        [appView addSubview:iconView];
        
        //3.4.2 添加名字
        UILabel *nameLabel=[[UILabel alloc]init];
        CGFloat namgeX=0;
        CGFloat nameY=iconY+iconH;
        CGFloat nameW=appW;
        CGFloat nameH=20;
        nameLabel.frame=CGRectMake(namgeX, nameY, nameW, nameH);
        nameLabel.backgroundColor=[UIColor greenColor];
        nameLabel.text=appInfo[@"name"];
        nameLabel.font=[UIFont systemFontOfSize:8];//设置字体大小
        nameLabel.textAlignment=NSTextAlignmentCenter;//字体居中
        [appView addSubview:nameLabel];
        
        //3.4.3添加下载按钮
        
        UIButton *downloadBtn=[[UIButton alloc]init];
        CGFloat downloadX=5;
        CGFloat downloadY=nameY+nameH;
        CGFloat downloadW=appW-2*downloadX;
        CGFloat downloadH=20;
        
        downloadBtn.frame=CGRectMake(downloadX, downloadY, downloadW, downloadH);
       // downloadBtn.backgroundColor=[UIColor brownColor];
        
        //设置按钮图片，普通状态
      //  downloadBtn.imageView.image=[UIImage imageNamed:@"buttongren"];
        UIImage *normalImage=[UIImage imageNamed:@"buttongreen"];
        [downloadBtn setBackgroundImage:normalImage forState:UIControlStateNormal];
        
        //设置按钮图片，高亮状态
        UIImage *highighedlImage=[UIImage imageNamed:@"buttongreen_highlighted"];
        [downloadBtn setBackgroundImage:highighedlImage forState:UIControlStateHighlighted];
       
        //设置按钮文字
        //downloadBtn.titleLabel.text=@"下载";
        [downloadBtn setTitle:@"下载" forState:UIControlStateNormal];
          [downloadBtn setTitle:@"更新" forState:UIControlStateHighlighted];
        
        //设置按钮文字的大小
        downloadBtn.titleLabel.font=[UIFont systemFontOfSize:8];
        
        
        
        
        [appView addSubview:downloadBtn];
    }
    
    
}